The Chelsea defender enjoyed delivering presents, signing autographs and meeting patients.
The centre-back made eight appearances for the Gunners after his arrival at the start of 2018.
Having struggled for much of the IPL season, Virat Kohli ensured RCB remain in playoff contention with victory over Gujarat Titans.
Having required elbow surgery in March, Mark Wood is slowly working his way back to fitness to feature for England's Test side.